Patent US4338944A successfully refreshed from Google Patents.
US3392984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact metal face seal for a sealed track
Assignee: Caterpillar Inc
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Filing: 1965-03-29
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Granted: 1968-07-16
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Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Harold L Reinsma
- 👤 Eugene J Hnilicka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:13
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/344; B; B62; B62D; B62D55/00; B62D55/08; B62D55/088; B62D55/0887; B62D55/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |